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Influence of PP content on mechanical properties, water absorption, and morphology in PA6/PP blend

机译：PP含量对PA6 / PP混合物中力学性能，吸水和形态的影响

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摘要

PA6/polypropylene (PP) blends are investigated for obtaining balanced strength and toughness. The focus of this study is to understand the effect of PP content on mechanical property, water absorption, impact strength, thermal behavior, and morphology of PP in the absence and presence of PP-g-maleic anhydride compatibilizer. In comparison to pure PA6, all blends have higher impact strength with 161 and 124% increase at 5 wt % PP content in uncompatibilized and compatibilized blends (UB and CB), respectively. Morphology of impact fractured samples shows brittle fracture in the case of CB. scanning electron microscope of cryogenically fractured samples show decrease in domain size and change in shape from ellipsoid to spherical, from UB to CB. Then, 75% reduction in water absorption is observed for 50 wt % PP content UB. Postwater absorption yield strength (YS) remains constant above 10 wt % PP in both UB and CB and decrease in YS is less at higher PP content in CB. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47690.
机译：研究了PA6 /聚丙烯（PP）共混物以获得平衡的强度和韧性。本研究的重点是了解PP含量对PP-G-马来酸酐增容剂的不存在和存在下PP的力学性质，吸水，冲击强度，热行为和形态的影响。与纯PA6相比，所有混合物的冲击强度较高，161％和124％，分别在未键入和相容的共混物（UB和CB）中以5wt％的PP含量增加。冲击破裂样品的形态显示CB的情况下脆性骨折。扫描电子显微镜的低温裂缝样品显示域尺寸的降低，从UB到Cb，从椭圆体以球形变化。然后，对于50wt％PP含量Ub，观察到吸水性降低75％。后水吸收屈服强度（ys）在UB和Cb中保持恒定的10wt％PP，并且Ys的降低在Cb中的较高PP含量下较低。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47690。

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